Detachable tire.



No. 735,265. PATENTBD AUG. 4, 1908.

H. E. IRWIN.

I DETAGHABLE TIRE.

APPLIOATION FILED MAR. 31, 1903.

N0 MODEL. 2 SHEETS-SHEET ll.

PATENTED AUG. 4, 1903. H. E. IRWIN.

DETAGHABLE TIRE. APPLICATION FILED MAR. 31, 1903. v

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N0 MODEL 1772/51; 721': arf

IHIH W UNITED STATES Patented August 4, 1390? PATENT OFFICE.

HERBERT E. IRWIN, OF GALESBURG, ILLINOIS, ASSIGNOR TO IRWIN RUBBERCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DETACHABLE TIRE.

SPECIFICATION forming part of Letters Patent No. 735,265, dated August4, 1903. Application filed March 31,1903. Serial No. 150.378. (Nomodel.)

To atZZ whom it may concern: I

Be it known that I, HERBERT E. IRWIN, a citizen of the United States,residing at Galesburg, in the county of Knox and State of Illinois, haveinvented certain new and useful Improvements in Detachable Tires, ofwhich the following is a specification. V

This invention relates to improvements in that class of double-tubepneumatic tires that are readily detachable from the wheel-rim, and hasfor its primary object to combine simplicity, positive engagement of thetire upon the rim, and ready detachability in such a tire and to have itadaptable for use upon the wheels of automobiles and vehicles of allkinds as Well as upon the bicycle and the like.

Further objects of my invention are to provide means thatabsolutelyprevent the creeping of the tire upon the rim and which areadapted also to support and strengthen the Walls of the rim, so that itmay sustain shocks and strains without cracking and splitting.

Another object of this invention is to provide at the base of theair-tube a fabric strip and rib which are intended to furnish agood seatfor the air-tube and alsoto protect it from being pinched between theopposing edges of the outer'casing when in position upon the rim and,again, to act as a wedge between the opposing edgesof the outer casingwhen the tire is applied to the rim and aid in maintaining the beads inengagement with the rim.

A further object of the invention is to place a hoop or metallic stripin the channel of the rim which bears against the. outer edges of the.casing when in position on the rim, so that the flanges or beadsof thetire-casing may be forced tightly under the overhanging sides of the rimand locked in position, the same only being capable of release by theremoval of the pressure brought to bear upon the inner surface of themetallic hoop or band.

Another object of my invention is to provide the outer edges of thecasing with dovetailed or ball-and-socket-like abutting surfaces.

These and such other objects as may hereinafter appear are attained bythe devices scale.

illustrated in the accompanying drawings, in which- Figure l is atransverse section of a wood wheel-rim and tire embodying my invention,showing the inner air-tube inflated. Fig. 2 is a transverse sectionalview of a tire and rim,'taken through a rivet and showing a locking hoopor band in cross-section. Fig. 3 is a transverse section of a tirehaving dovetailed or notched abutting surfaces. Fig. 4: is a side viewof the broken hoop or band shown in Fig. 2, but drawn at a smaller Fig.5 is a sectional view of a tire and rim, showing the tire partiallydetached from the rim. Fig. 6 is a view showing a transverse section ofa tire having rounded socketlike abutting surfaces and a metallic rimmounted on a wood felly. Fig. 7 is a sectional view of a tire having itsinner air-tube inflated and mounted upon a steel rim that is adapted forwire-spoked wheels. Figs. 8 and 9 are transverse sectional views oftires embodying a staple fastening device. Fig. 10 is a view showing atransverse section of an air-tube deflated and having afabricstrip onits base which incloses a fabric rib, the

same being shown in an inflated position in Figs. 1, 7, 8, and 9.

Similar letters of reference indicate the same parts in the severalfigures of the draw- Ings.

Referring by letter to the accompanying drawings, A indicates a woodwheel-rim, as shown in Figs. 1, 2, 3, and 5.

In Fig. 7 rim A is made of steel, and in Figs. 6, 8, and 9 the steelrims A A and A are mounted on wood follies A A The outer casing D issplit at its inner circumference and incloses an air-tube C, which isprovided at its base with a fabric strip a, between which and-theair-tube is a fabric rib 0 The said fabric strip and rib lie between thereceding surfaces 01 of the opposing edges of the outer casing, whichabut at d and 61 when the parts are assembled, as shown in Figs. 1 and7. In the periphery of rim A is a circumferential groove which isundercut at a and a and with which undercut portions of the groove thebeads on the flanges or the edges of the outer casing at d and d engage.The casing 1) is provided with a thickened portion or too - some tomanipulate.

shoulder at d, which rests upon rim A at d It is necessary toremovetransverse sections of the flanges or outer edges of easing D inorder that the flanges may sit astride bolts E, rivets E or screws E,which are placed at proper intervals throughout the circumference of rimA and which pass through the walls and across the channel of the rim.

G indicates bolts which operate as so many jack-screws against brokensteel locking-band F, which is held in its proper place by pegsf.

In Fig. 3 casing D is provided with dovetailed or notched abuttingsurfaces at d (Z and (1 while in Fig. 6 the casing has ball-andsocket-like abutting surfaces at (Z and d.

In Fig. 7, H represents nipples, with a portion of the wire spokesshown.

Staple-like fastening means J are shown in Figs. 6, 8, and 9.

This invention is in the nature of an improvement upon that set forth inthe patent granted to myself August 13,1901,No. 680,486, and the noveltyof my present invention resides in a fabric rib that is secured to thebase of the air-tube, clamping means which extend through the walls ofthe rim and which prevent them from spreading and splitting, and a steelband which lies in the channel of the rim and against which boltsoperate to force the beads on the flanges tightly against the undercutportions of the groove in the rim.

Other novel features of this invention consist in the roundedsocket-like or dovetailed abutting surfaces of the tire and in the metalstaple-fastening J, which secures the steel rim to a wood felly andwhich also prevents the creeping of the tire upon the rim.

The clencher-tire is usually equipped with a flap which lies under theair-tube and is secured to one of the sides of the tire-casing a shortdistance above its bead. The object of this flap is to prevent theair-tube from getting between the edges of the casing and being pinchedthereby. Much difficulty is experienced in placing a tire equipped withsuch a flap in its proper place on the rim, as the flap is frequently inthe way and trouble- Instead of employing this inconvenient flap Icement or vulcanize fabric strip (2 on the base of the air-tube O andplace between the said fabric strip and air-tube a fabric cord 0 whichlies between the edges of the casing and not only removes the danger ofpinching the air-tube, but also acts as a wedge between the edges of theeasing of the tire when the air-tube is inflated and aids in maintainingengagement of the beads with the rim. It is also both cheaper to equipand more convenient to manipulate a tire provided with a fabric-rib thanone with the stiff flap.

It is well to support and strengthen the walls of the rim by clampingmeans, which may consist of rivets, bolts, or screws passing through thewalls and across the channel of the rim, thus preventing the walls fromspreading and a consequent cracking and splitting of the rim. Theclamping means also pass through notches or openings made in the flangesof the tire, which absolutely provides against any creeping of the tireupon the rim.

I have constructed a simple but efiective device for positively securingthe tire to the rim, which consists of a steel band formed in the shapeof a hoop with its ends approaching each other at the valve-stem. Thissteel band lies in the channel of the rim and is held in its properposition by pegs, preferably placed beneath the bolts or rivets, whichpass across the channel in order that they may be out of the way of theflanges. Bolts having nuts sunken into the rim to prevent them fromrevolving operate against the steel band F, which holds the beads tightagainst the undercut portions of the groove and prevents them from beingreleased except when the pressure is removed from the band F.

The abutting surfaces of the flanges in Fig. 3 have a dovetailed -likeappearance; but

above the abutting surfaces the sides recede In Fig. 6 the rim by theabutting together of the flanges of the casing. Rim A has rounded topedges at CU.

It is a common practice to secure metal tires to wood fellies by the useof bolts. In Figs. 6, 8, and 9 I employ fastening means or staples J tosecure the rims to the fellies, and notches are cut in the flanges ofthe easing,

into which the staples fit, which prevents creeping of the tire upon therim in a similar manner as bolt E and rivet E do.

In order to remove the tire from the rim,

as shown in Figs. 1, 3, 6, and 7, I deflate the.

air-tube and by force compress one of the sides of the casing inward, asshown in Fig. 5, in which position it will be readily seen the flangesmay be easily removed from the rim.

Fig. 8 is a transverse section of a clenchertire, showing the hookededges or the rim at a and the hooked edges of the tire-casing at 01 Thepresent practice to prevent creeping and to secure a clencher-tire toits rim is by the use of butterfly-bolts or bolts having ,V-shapedwasher -heads. Said V-shaped washer-heads lie between the beads and onlyprevent the tire from creeping on the rim by friction, while staples Jare placed at short intervals in'the channel of the rim and positivelysupport the beads throughout the IIO circumference of the tire. Thebutterfiy bolts are also troublesome to adjust and get in their properplace. 1 In the tire sides and a short distance above the beads in Fig.9 are a number of small dots I, which indicate the ends of small wiresor steel tape. Tools are required to force such a tire over the edge ofthe rim to its place.

I do not claim as new a tire having steel tape in its body, but show howstaples J and fabric rib 0 may be adapted to this style of a tire.

Changes in the form of the fasteiiing means that lie in or across thechannel of the rim, as well as changes in the form of the fabric rib,may be made without departing from the spirit of my invention,and allsuch changes are contemplated by the following claims.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination with a wheel-rim provided with a peripheral channelhaving overhanging sides, of a tire-casing split on its inner side andprovided with marginal flanges or lips, each of said flanges having onits outside a'bead adapted to lie under the overhanging sides of the rimand having on its inside opposite said beads surfaces which form betweenthemselves a substantially V or trough shape, and an inner air-tubeprovided with a fabric strip which in turn seagainst each other, abovesaid abutting sur-' faces the tire-casing recedes in a substantially Vor trough shape, and an inner airtube provided with a fabric stripbetween which and the air-tube is a fabric rib which lies in the saidV-shaped space of the tire-casing to prevent the air-tube from beingpinched thereby, substantially as and forthe purpose described.

3. The combination with a channeled wheelrim having overhanging sides,of a tire-casing split on its inner side and provided with marginal lipsor flanges, each of said flanges having on its outside a bead adapted tolie under the overhanging sides of the rim and having on its insideopposite said beads surfaces which abut against each other, said flangeshaving transverse notches or sections removed from them so that they sitastride means which pass across the channel and through the walls of therim preventing said walls from spreading and cracking and alsopreventing the creeping of the tire upon the rim, substantially as andfor the purpose described.

4. The combination with a channeled wheel rim having overhanging sides,of a tire-casing split around itsinner side and having annular beadsadjacent to said split fitting under the overhanging sides of the rim,and a broken metallic hoop or band which lies in the channel of the rimunder the edges of the flanges so that when pressure is brought to bearagainst the inner surface of said band the beads on the flanges areforced tightly under the overhanging sides of the rim, substantially asand for the purpose described.

5. The combination with a channeled wheelrim having overhanging sides,of a tire-casing split around its inner side and having annular beadsadjacent to said split adapted to lie under the overhanging sides of therim, said beads having dovetailed or ball-and-socketlike abuttingsurfaces, and notches removed from the casing which correspond tofastening means of the rim, substantially as described.

6. The combination with a channeled wheelrim having overhanging sides,of a tire-casing split around its inner side and having annular ribs orbeads adjacent to said split adapted to lie under the overhanging sidesof the rim, said channeled rim being mounted on and secured to a woodfelly and provided with means which fit into corresponding notches inthe tire-casing, substantially as described.

7. The combination with a channeled wheelrim having hooked edges, of atire-casing split around its inner side and having annular ribs or beadsadjacent to the split which engage said hooked edges of the rim, saidbeads forming between themselves a substantially V-shaped space, and anair-tube provided with a fabric strip which in turn secures a ring orband thus forming a rib on the base of the air-tube which lies in theV-shaped space between the beads, substantially as described.

8. The combination with a channeled wheelrim having hooked edges, of atire-casing split around its inner side and having annular ribs or beadsadjacent to said split which engage the hooked edges of the rim, saidchanneled rim being mounted on a wood felly and secured to same byfastening means which fit into corresponding notches in the casing,substantially as described.

9. The combination with a channeled wheelrim, of a tire-casing splitaround its inner side and provided with annular beads adjacent to saidsplit, said beads forming between themselves a substantially V-shapedspace and at or a short distance above the said beads are steel tapeembedded in the body of the tire,and an inner air-tube provided with afabric rib which lies in the \I-shaped space between the beads,substantially as and for the purpose means which fit into correspondingnotches u described.

10. The combination with a channeled wheel-rim, of a tire-casing splitaround its inner side and having annular beads adjacent 'to said splitand at or a short distance above said beads are steel tape embedded inthe tirebody, said channeled rim being mounted on a wood felly andsecured to same by fastening in the casing, substantially as described.

In testimony whereof I have signed my name to this specification inpresence of two subscribing witnesses.

HERBERT E. IRWIN. Witnesses:

DAVID R. JAMES, MARY A. JAMES.

